System and its method for carrying out TCP application layer protocol package for VPN message

A technology of application layer protocol and message, which is applied in the direction of transmission system, data exchange through path configuration, electrical components, etc., can solve problems such as temporary fixes but not root causes, and achieve the effect of increasing adaptability

Inactive Publication Date: 2006-05-10
武汉思为同飞网络技术股份有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

Therefore, the traditional method is passive and treats the symptoms but not the root cause.

Method used

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  • System and its method for carrying out TCP application layer protocol package for VPN message
  • System and its method for carrying out TCP application layer protocol package for VPN message
  • System and its method for carrying out TCP application layer protocol package for VPN message

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Embodiment Construction

[0066] Further explain below in conjunction with accompanying drawing:

[0067] Taking HTTP application encapsulation as an example, Figure 4 shows the whole process of VPN communication encapsulating HTTP protocol.

[0068] In FIG. 4 , the first VPN device 9 and the second VPN device 11 respectively protect different first subnets 8 and second subnets 12 . There is a firewall 10 between the two VPN devices, and the firewall 10 only opens port 80 to the outside world and only allows WWWW access. In this case, if a VPN tunnel is to be established between the two VPN devices 9 and 11 , traditional IPSec communication packets will not be able to pass through the restriction of the firewall 10 . In order to communicate smoothly, the two VPN devices 9 and 11 need to enable the HTTP application protocol encapsulation function to pass through the firewall 10 .

[0069] First of all, configuring a VPN tunnel on the first VPN device 9 requires HTTP application encapsulation, so when ...

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Abstract

This invention discloses one system and method to seal the VPN message of TCP application layer agreement and relates to one network communication sealing system and method. The system comprises network agreement gate, IPSec and network keys exchange agreement module, TCP channel module, TCP agent module and application sealing database module. The method is to seal the VPN message to the TCP application agreement. This invention not only supports common HTTP application and also expends other TCP application and adds adaptability to network environment of system and automatically seals communication according to network environment requirements.

Description

technical field [0001] The present invention relates to a network communication encapsulation system and method thereof, in particular to a method for traversing firewalls and Special equipment such as routers, a system and method for smoothly performing network communication. Background technique [0002] With the development of the Internet (Internet), more and more enterprises, universities and government agencies have begun to use the Internet for communication applications. In order to manage the network conveniently and effectively control the network, network management personnel will set up various firewalls or proxy services at the exit of the LAN, so that on the one hand, the security of external Internet access to the LAN can be guaranteed, and on the other hand, it can be controlled. External access rights of internal personnel in the LAN, for example, only common applications are allowed to access. But this also has its side effect, that is, it restricts the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L47/43
Inventor 梅松李芝棠李伟明
Owner 武汉思为同飞网络技术股份有限公司
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